Ball-deburring machine



R. H. BANNELL.

BALL DEBURRING MACHINE.

APPLICATION FILED Nov. 7, 1919.

1,395,789. Patented Nov. 1,1921.

weaves.

RAYMOND H. BANNELL, or WATERBURY, CONNECTICUT.

BALL-DEBURRING- MACHINE.

Specification of Letters Patent.

Patented Nov. 1, 1921.

.Application filed November 7, 1919. Serial No. 336,511.

To all whom it may concern.

Be ,it known that I, RAYMOND BAN- NELL, a citizen o-fthe United States,and a resident-of Waterbury, in the county of New Havenand State ofConnecticut, have invented certain new and useful Improvements inBall-Deburring Machines, which improvements are-fully set forth-in thefollowing specification.

This invention relates to improvements in constructions of that classavailable for automatically treating, fora deburring or rough-grindingefi'ect, spheroidal objects, particularly when formed from metal andusable as anti-friction bearing elements,. such constructions being Iwell-designated ball-deburring machines.

Machines of the general type available for treating metallic spheroidalobjects, as bearing balls and as herein contemplated, essentiallycomprise cooperating members capable of receiving between them andabrasively acting thereon, the spheroidal objects to be treated,suchobjects being successively fed to and into the space intervening betweensaid members and automatically delivered successively therefrom.

The object of this invention is to provide a machine of the generalcharacter above indicated, which shall be simple and comparativelyinexpensive as regards its construction; durable efficient and reliablein practical service; convenient in its application to practicalpurposes; and which shall possess certain well-defined advantages overprior analogous constructions.

The invention consists in certain combinations, details and partswhereby, together with the novel disposition and relative arrangement ofsaid parts, the attainment of the, foregoing object is renderedpracticable, all of which will be hereinafter more specifically referredto and set forth in the claims hereto appended.

The invention is clearly illustrated in the accompanying drawing,wherein: Figure 1 is a side elevation of a balLdeburring machineembodying my said improvements, and ,to more clearly disclose detailsand parts thereof otherwise unduly obscured, a portion of the anteriordeburring-member and of the anterior wall of'the contemplated hopper,are broken away.

Fig. 2 is. an. end elevation of same, partly in section, the sectionbeing taken diametrically through the deburring-members of the machine,as along the dotted line ww of Fig. 1.

Fig. 3 is a top plan view of the contemplated. hopper and parts morecooperating therewith, including the upper segments of the cooperatingdeburring-members.

Fig. 4 is a view showingin perspective and detached the duplextransfer-insert which I make use of.

aving reference to the accompanying drawing, wherein similarreference-numerals denote like partsthroughout the several views, I, incarrying out my present invention, make use of a posterior, (consideredrelatively to the upright position herein contemplated therefor),balldeburring member 2, and, for cooperation therewith, an anteriorball-deburring member 2, said members being, each in the general form ofa fiat ring having an operating face, and the cooperative relationthereof being such that a substantial abrasive effect may be had onanyspheroidal object or objects positioned at any time between them, inthe practical operation of the machine.

owever, it is herein contemplated that the posterior member 2 shall beduly supported fixedly, in any manner-common and well-known in the art,while the anterior member 2 shall rotate in close parallelism facewisetherewith. The operating face proper, as 2", of the posterior member 2is circumscribed by an outer, marginal ledge 8, raised relativelythereto and duly interrupted at any appropriate segment thereof,preferably the topmost one, whereby duly spaced leading-on andleading-off terminals 3, 3", respectively, are formed therefor, saidmember being further provided with anopen ballrace 4, at and extendingsolely along the angle formed by and between the face 2 and the innerwall of the ledge aforenamed and conforming'in cross-section to an arcof a circle Whose convexity projects obliquely and outwardly downward.

The operating face proper, as 4:, ofthe rotary, anterior member 2,circumscribes an inner marginal ledge 4", raisedrelatively thereto anduninterrupted, said anterior member being further provided with an openball-race '5 at and extending solely along the angle formed by andbetween the immediately face 4: and the outer wall of the ledge lastmentioned and conformmg in cross-sectlon to an arc of a circle whoseconvexity projects obliquely and inwardly upward, in-

reverse opposition, accordingly to the ballrace 4, said ball-racesvarying in general diameter to-this end, substantially as shown, andjointly forming, under the assembled condition of the members 2, 2, acomplete, practically closed ball-race non-circular in generalcross-sectional contour, having its arc-intersecting diameter lyingoblique to the plane of the assembled deburring members,

and whose intake is at 5' and whose outlet ledge 41:, and has its inneredge preferably curved in conformitiy with a segment thereof, itsopposite ends terminating duly short of therespective leading-on andleading-off terminals 3, 3", and being duly curved as shown for theformation with said terminals, respectively, of an initial ball-racesection 7, constituting an intake continuation of the closed ball-raceaforenamed, and a final ball-race section 7, constituting a dischargecontinuation of said closed ball-race.

As will be noted, the prime function of the transfer-insert 6 is toinsure the transference of the incoming objects to be treated from theinterior of section 7, consecutively to and into the general, closedball-race aforenamed, situated between the members 7 2, 2', at theintake 5" thereof, and the transference consecutively from said generalball race of any objects more or less treated and outcoming from theoutlet 5 thereof, to and into the section 7", for further onwarddelivery, movement as may be found desirable in the practical operationof the machine, the function of said transfer-insert being,accordingly,two-fold. v

Any appropriate supporting medium common and well known in the art maybe availed of for cooperatively supporting the members 2, 2.

I further purpose positioning duly above the assembled deburring membersof the machine, a charger 8, which may be of any clesired general formand capacity, communication between the same and the ball? race section7 being here shown as established by way of a suitable feed-pipe 8', andany spheroidal object contained within said charger escaping therefrom,each by its own gravity, and accordingly entering the general ballra ceaforenamed,

" primarily by way of said feed-pipe and from thence by way of saidsection 7, as will vbe clearly understood.

At times it is desirable that the feeding of the objects undergoingtreatment to and into the general ball-race aforenamed, shall becontinuous throughout a substantial period, or until duly interrupted bythe operator of the machine; and to the attainment of this end, Iprovide a return take-off pipe 8", by way of which'communication isestablished between the discharge end of the final ball-race section?and the interior of the charger 8, substantially as shown in the drawingforming a part hereof.

Where the take-off pipe 8" is employed the objects undergoing deburringtreatment within the general ball-race aforenamed will urge, each itsnelghbor next 1n advance thereof directly along said general ball-race,

and ,7 from thence to and intosaid take-off pipe by way of the finalball-race section 7 said objects being accordingly returned, through themedium of the take-off pipe 8, to and into the charger '8, from whencethe objects again make their way, as here: inbefore explained, to andinto the general ball-race aforenamed for further deburring treatmenttherein. i

While the provision of cooperative elements whereby continuous feedingof the ob ects undergoing treatment is secured, constitutes an importantcharacteristic of my present lnvention, it is obvious that the same maybe advantageously availed'of where the take-off pipe aforenamed isomitted;

The various parts of the machine may be formed from any suitablematerial, and the operation thereof will be apparent from the foregoingdescription of same.

It will'be seen that my improved balldeburring machine is not onlywelladapted for the purposes for which it is intended, but that the samemay be modified to a considerable extent, particularly as regards thespecific form of the transfer-insert. made use of, the medium employedwhereby the objects treated within the general ball-race aforenamed arereturned to and into. the charger 8, and various minor details of thegeneral constructiom without departing from the spirit and principle ofmy invention as coming within the scope of the claims hereto appended.

claim A ball-deburring machine comprising upright cooperative deburri-ngmembers forming between themf av general ball-race forming an elevatedlntake, one of saidmemsaid ball-race for 'deburring treatment therein;and a transfer-insert, the latter occupy-' ing said interrupted segmentand affording Having thus described my invention, 1' i both an intakeball-race-section and a delivery ball-race section, said intake anddelivery sections constituting terminal continuations of said ball-race.

2. A ball-deburring machine comprising upright cooperative deburringmembers forming between them a general ball-race having an elevatedintake, one of said members having an interrupted segment; means forfeeding by gravity and by way of its elevated intake spheroidal objectsto and into said ball-race for deburring treatment therein; and atransfer-insert, the latter occupying said interrupted segment andforming a ball-race section which constitutes a terminal continuation ofsaid general ball-race.

3. A ball-deburring machine comprising upright cooperative deburringmembersfor-ming between them a general ball-race having an elevatedintake and'an elevated outlet; a charger, duly positioned above and infeed-communication with said general ball-race at the intake endthereof; and a take-ofi' pipe, the latter establishing communicationbetween the charger aforenamed and said general ball-race at thedelivery end thereof, and whereby objects treated within said ball-raceare continuously returnable to and into said charger.

4. A ball-deburring machine comprising upright cooperative deburringmembers forming between them having an elevated intake and an elevatedoutlet a general ballrace, one of said members having a segmentinterrupted for the formation of leading-0n and leading-off terminals,respectively, at the interrupted segment aforenamed; a transfer-insertoccupying said interrupted segment, between said terminals, and formingwith the latter, respectively, an intake ball-race section and adelivery ball-race section; and means for duly feeding by gravityspheroidal objects to and into said ballrace by way of said intakesection.

RAYMOND I-I. BANNELL.

